#!/usr/bin/env python3
# -*- coding: utf-8 -*-
'asdas'
__author__='sss'
import sys
def test():
    args=sys.argv
    if len(args)==1:
        print('aa')
    elif len(args)==2:
        print('aa%s!' % args[1])
    else:
        print('aaa',a)

if __name__=='__main__':
    test()
